Clang warns:

drivers/scsi/pcmcia/nsp_cs.c:1137:27: warning: equality comparison with
extraneous parentheses [-Wparentheses-equality]
                if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) {
                     ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
drivers/scsi/pcmcia/nsp_cs.c:1137:27: note: remove extraneous
parentheses around the comparison to silence this warning
                if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) {
                    ~                   ^                      ~
drivers/scsi/pcmcia/nsp_cs.c:1137:27: note: use '=' to turn this
equality comparison into an assignment
                if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) {
                                        ^~
                                        =
1 warning generated.
Signed-off-by: NNathan Chancellor <natechancellor@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Clang warns:

drivers/scsi/nsp32.c:2444:14: warning: explicitly assigning value of
variable of type 'unsigned char' to itself [-Wself-assign]
        offset      = offset;
        ~~~~~~      ^
Signed-off-by: NNathan Chancellor <natechancellor@gmail.com>
Acked-by: NGOTO Masanori <gotom@debian.or.jp>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Currently, the Kbuild core manipulates header search paths in a crazy way
[1].

To fix this mess, I want all Makefiles to add explicit $(srctree)/ to the
search paths in the srctree. Some Makefiles are already written in that
way, but not all. The goal of this work is to make the notation consistent,
and finally get rid of the gross hacks.

Having whitespaces after -I does not matter since commit 48f6e3cf
("kbuild: do not drop -I without parameter").

[1]: https://patchwork.kernel.org/patch/9632347/Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

I was able to build without these extra header search paths.

Especially, the header search path -I. in kernel Makefiles is always
suspicious; it allows the compiler to search for headers in the top of
$(srctree), where obviously no header file exists.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/fnic/vnic_wq.c: In function 'vnic_wq_alloc_bufs':
drivers/scsi/fnic/vnic_wq.c:50:19: warning:
 variable 'vdev' set but not used [-Wunused-but-set-variable]

drivers/scsi/fnic/vnic_rq.c: In function 'vnic_rq_alloc_bufs':
drivers/scsi/fnic/vnic_rq.c:30:19: warning:
 variable 'vdev' set but not used [-Wunused-but-set-variable]

Never used since introduction.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since the READ(6) and WRITE(6) commands interpret a zero in the transfer
length field in the CDB as 256 logical blocks, avoid submitting such
commands.

Cc: Douglas Gilbert <dgilbert@interlog.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Reported-by: NDouglas Gilbert <dgilbert@interlog.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Reviewed-by: NDouglas Gilbert <dgilbert@interlog.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since the function scsi_to_u32() is identical to get_unaligned_be32(),
change all scsi_to_u32() calls into get_unaligned_be32() calls.

Cc: Jian Luo <luojian5@huawei.com>
Cc: John Garry <john.garry@huawei.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There are two statements that are indented incorrectly. Fix these.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: qla2xxx-upstream@qlogic.com
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: QLogic-Storage-Upstream@cavium.com
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NManish Rangankar <mrangankar@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: Karan Tilak Kumar <kartilak@cisco.com>
Cc: Sesidhar Baddela <sebaddel@cisco.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: Satish Kharat <satishkh@cisco.com>
Cc: Sesidhar Baddela <sebaddel@cisco.com>
Cc: Karan Tilak Kumar <kartilak@cisco.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Varun Prakash <varun@chelsio.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Oza Pawandeep <poza@codeaurora.org>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When calling debugfs functions, there is no need to ever check the return
value.  The function can work or not, but the code logic should never do
something different based on this.

[mkp: removed unused label]

Cc: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
Cc: Sudarsana Kalluru <sudarsana.kalluru@qlogic.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

I'll be moving on to different things in the storage stack and Hannes
agreed to take over FCoE.

Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: NJohannes Thumshirn <jthumshirn@suse.de>
Acked-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There's no need to export fcoe_ctlr_destroy_store as a symbol, so remove
the EXPORT_SYMBOL() line for it.

Cc: Johannes Thumshirn <jth@kernel.org>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We are trying to get rid of BUS_ATTR() and the usage of that in the fcoe
driver can be trivially converted to use BUS_ATTR_WO(), so use that
instead.

Cc: Johannes Thumshirn <jth@kernel.org>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

From Ching Huang <ching2048@areca.com.tw>

Update driver version to v1.40.00.10-20190116.
Signed-off-by: NChing Huang <ching2048@areca.com.tw>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

From Ching Huang <ching2048@areca.com.tw>

For ACB_ADAPTER_TYPE_B controller, the read/write after hibernate and
resume may sometimes result in 'isr get an illegal ccb command' in
/var/log/messages. This patch fixes it.
Signed-off-by: NChing Huang <ching2048@areca.com.tw>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

From Ching Huang <ching2048@areca.com.tw>

dma_zalloc_coherent will be phased out. Use dma_alloc_coherent instead.
Signed-off-by: NChing Huang <ching2048@areca.com.tw>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Update fnic driver to version 1.6.0.47.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds changes to check if fnic devcmd2 interface is exported by
the firmware. If devcmd2 interfaces is exported, driver starts using it
else falls back to fnic devcmd1 interface.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds fnic devcmd2 interfaces for initialization and posting
commands to fw.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds the devcmd2 wq initalization and devcmd2 ring allocation
helper interfaces used by devcmd2 init.

[mkp: typos]
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds the fnic devcmd2 controller definitions.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds the fnic devcmd2 command structre and the command result
structure definitions.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Impose an upper limit on the max number of CQ entries (corresponding to the
copy wq) processed in an interrupt.  Use module parameter to set the limit.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Do RQ enable before posting descriptor. This is needed for later hw
revisions.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Doing vnic_device_enable before this could cause interrupts to happen
before they are setup.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The change is to print warning when scsi done is called for an IO that has
not yet been issued to the fw. Also adding sc and tag to debug print when
IO is cleaned up.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This change is to add fnic stats for the max number of CQs (corresponding
to copy WQ) processed in a given interrupt, max time taken by the ISR.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds the current fnic port speed stat to fnic debug stats.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Need to use fnic_lock as well as host lock in that order to set state
flags.

[mkp: typos]
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

rq->ctrl not enabled when this is called is bad but not fatal and can
continue.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch changes the default lun queuedepth for fnic to 256.
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch is to add fnic 20G port speed display in sysfs.

[mkp: typo]
Signed-off-by: NSatish Kharat <satishkh@cisco.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

From scsi_init_command(), a function called by scsi_mq_prep_fn():

	/* zero out the cmd, except for the embedded scsi_request */
	memset((char *)cmd + sizeof(cmd->req), 0,
		sizeof(*cmd) - sizeof(cmd->req) + dev->host->hostt->cmd_size);

In other words, scsi_mq_prep_fn() clears scsi_cmnd.flags. Hence move the
clear_bit() call into the else branch, the only branch in which this code
is necessary.

See also commit f1342709 ("scsi: Do not rely on blk-mq for double
completions").

Cc: Keith Busch <keith.busch@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch makes the source code more uniform and does not change any
functionality.
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
[ bvanassche: extracted this patch from a larger patch ]
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Rework sd_setup_read_write_cmnd() so it becomes more readable. Put all the
sanity checking at the head of the function and sanitize the logged error
messages. Move the legacy SCSI logging calls to the end of the functions
and reduce conditional nesting.
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
[ bvanassche: ported this patch from kernel v4.11 to kernel v5.0 ]
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>